Window-fastener



" lower part of bolt carrying arm and bolts,

NITED STATES Prion.

PATENT WlNDOW-FASTENER.

SPECIFICATION forming part of Letters Patent No. 532,675, dated January15, 1895.

I Application filed April 26,1894. Serial No. 509,066- (No model.)

', a citizen of the United States, and aresident of the city and countyof Philadelphia, State of Pennsylvania, have invented certain new anduseful Improvements in Window-Fasteners, of which the following is aspecification.

My invention relates to improvements in sash fasteners, and the objectof my invention is to furnish a device which will automatically andpositively lock both the upper and lower sash of a window whenever thesesash are in their normal positions, that is when the upper sash is fullyraised and the lower sash fully lowered.

My invention is attached to the upper side of the upper rail of thelower sash and to the upper side of the lower rail of the upper sash,and it consists of an arm, whichis carried by the upper rail of thelower sash, which is for nished preferably with two spring bolts, and ofa keeper carried by the lower rail of the upper sash into which thespring bolts pass when the sash are in their normal positions and whichengages the bolts and prevents both sash from being moved until thebolts are withdrawn. The bolts are. furnished with finger pieces bymeans of which they may be withdrawn from the keeper, and the arm whichcarries the bolts is preferably pivotall y attached to the upper rail ofthe lower sash and furnished with a spring which returns this arm to itsnormal position as hereinafter described.

In the accompanying drawings forming part of this specification and inwhich similar.

letters of reference indicate similar parts throughout. the severalviews, Figure 1, is a plan of a part of the upper rail of the lower sashand part of the lower rail of the upper sash and of my fastener; Fig. 2,a side elevation of Fig. 1; Fig. 3, a section through the keeper on line3-4., Fig. 4.; Fig. 4, a section through the keeper on line 1-2, Fig. 3;Fig. 5, a section of Fig. 4. on line 5-6; Fig. 6, a plan of plateattached to upper rail of lower sash and to which the arm which-carriesbolts is pivoted, showing spring for returning arm and bolts to theirnormal positions; Fig. 7, a section of Fig. 6 on line 7 -8 5 Fig. 8, aplan of Fig. 9, an end elevation of Fig. 8; .Fig. 10, a

section of Fig. 8 on line 9-10; Fig. 11, a side elevation of key forturning bolt carrying arm, and Fig. 12, an end elevation of Fig. 11.

A represents part of the upper rail of the lower sash; B, part of thelower rail of the upper sash. Secured to the rail A, by means of screws0 or otherwise, is a plate D which is furnished with an upwardlyprojecting lug or cup E the upper end of which is open, and within whichis a spring F, Figs. 6, 7, and 10, one end of which is attached to somepoint,

as G, within the cup E, and the other end of which is attached to thebolt carrying arm as hereinafter described.

H is an arm one end of which is furnished with a circular projection orboss I, Figs. 8 and 10, which is adapted to enter the top of the cup Ecarried by plate D, and the other, or outer end, of which is preferablyfurnished with .two bolts J, K, Figs. 1, 8 and 9, which are beveled ontheir bottom sides as shown in Fig. 9, and which are furnished withupwardly projecting finger-pieces L, and which are forced outward bymeans of a spring M. The bolts J, K, are carried in a sleeve U open atboth ends and which is secured. to the under side of the front end ofthe arm H.

N, Figs. 1, 2, 3, 4 and 5, is 'a keeper carried by lower rail of uppersash, which bolts J, K, enter when the sash are both closed. This keeperis secured to the upper sash by means of screws 0, or otherwise, and itsupper side is furnished With a slot P through which the bolts can enterit.

Upon the lower side of arm H is a projection B, Fig. 10, to which oneend of springF is secured, and within the cup E is a key S the stem ofwhich is furnished with a bridge V adapted to engage projection R on armH and the upperpart of which projects up and through armH and isfurnished with a thumb piece T; or the thumb piece T may form part ofthe casting of arm H, the rest of the key ,9 5 being done away with.

When itis desired to open the windows, the thumb pieces L, fast to thebolts J, K, are pressed together until the bolts within the sleeve U aremoved in and out of contact with too the keeper. They. can now be, bymoving onesash up and the other down, withdrawn from the keeper N. Whenthe thumb pieces L are released, the spring M, which has beencompressed, expands and throws the bolts out again.

When the windows are closed the beveled sides of the bolts strike theends of slot P in keeper N and are pushed back. When all the way backthey enter keeperN and the spring M throws them out and they are held bythis keeper until withdrawn by means of thumb pieces L, automaticallyand positively fastening the windows whenever they are closed.

It sometimes happens, when the windows are to be cleaned for instance,that the upper rail of the lower sash and the upper rail of the uppersash have to pass each other, the lower window being pushed all the wayup, the upper one all the way down. In order to permit this the arm H ispivoted to the upper rail of the lower sash and by means of the thumbpiece T the arm may be moved around so as to be parallel with the railof the sash. When it is in this position the upper'rails ot' the sashmay be moved past one another. As soon as the thumb piece T is releasedthe spring F returns arm II to its normal position at right angles tothe sash.

While I have described the arm H as furnished with two bolts it will beunderstood that but one bolt may be used if desired.

Having thus described my invention, I claim-- 1. In a sash fastener, incombination, an arm carried by the upper rail of the lower sash, boltsJ, K, carried by the outer end of said arm, thumb pieces L carried bysaid bolts, a spring M adapted to throw said bolts outward, and a keeperN carried by the up per part of the lower rail of the upper sash andadapted to engage and hold said bolts.

2. In a sash fastener, in combination, an arm H pivotally attached tothe upper rail of the lower sash, bolts J, K, carried by the outer endof said arm, thumb pieces L carried by said bolts, a spring M adapted tothrow said bolts outward, a spring F for keeping said arm normally atright angles to said sash, and a keeper N carried by the lower rail ofthe upper sash and adapted to engage and hold said bolts when the sashare closed.

3. In a sash fastener, in combination, a plate secured to the upper railof the lower sash, a lug or cup carried by said plate, an arm one end ofwhich is furnished with a boss adapted to enter said lug or cup, aspring within said cup adapted to cause said arm to stand normally atright angles to said sash, a bolt or bolts carried by the end of saidarm,a spring for forcing said bolt or bolts outward, thumb piecescarried by said bolts, a keeper carried by the lower rail of the uppersash adapted to engage and hold said bolts and means for swinging saidarm and bolts around when released from said keeper, all substantiallyas and for the purposes set forth.

ALBERT M. LEVERING.

lVitnesses:

STEVENSON II. WALSH, H. V. Loss.

